Question

help plzzz!

Answer 1

with

Answer 2

http://prntscr.com/8mj00r

Answer 3

@ganeshie8

Answer 4

set \(A \cup B\) is composed by all elements which belong to A and all elements which belong to B, common elements are taken only one time

Answer 5

so would my answer be {3,12}?

Answer 6

no, because the set {3,12} is the intersection between A and B

Answer 7

the right definition is:
an element, say x, belongs to \(A \cup B\) if x belongs to A or x belongs to B

Answer 8

for example: 8 belongs to A, so 8 belongs to \(A \cup B\)

Answer 9

is it a?

Answer 10

graphically speaking, we can make this drawing:

Answer 11

that's right! it is option a

Answer 12

thank u